CATALOGUE OF ECHINIDA. 
57 
* Ambulacra slightly sunken. 
1 . Faorina Chinensis, t. 6, f. 1 . 
Purple ; posterior end very high. 
Spatangus Chinensis, Gray, Mss. B. M. 1836. 
Faorina Chinensis, Gray, Ann. £) Mag. N. H. 1851. 
Hab. China. 
a. Adult ; without spines. China. Presented by J. Russell 
Reeves. 
b, c. Small ; without spines. China. 
** Ambulacra wide, deeply sunk, forming a broad internal rib. 
2. Faorina Antarctica. 
Subcordate ; rather depressed ; lateral ambulacra very deep, 
forming very [distinct ribs in the inner surface ; peripetalous 
band wide, sinuous ; hinder end rounded, not very high. 
Faorina antarctica, Gray, Ann. 8$ Mag. JY. H. 1851. 
Hab. South Polar Seas. 
a, b, c, d. Partly with spines. South Polar Seas. Capt. 
Sir James Ross. 
3. Favorina cavernosa. 
Ovate, subrotund; base convex; lateral ambulacra very 
deeply concave, ovate, oblong, the odd one deeply concave. 
Spatangus (tripylus) cavernosus, Philippi, Erich. Arch. 1845, 
345, 1. 11, f. 2. 
Brissiopsis cavernosa, Agassiz Desor, 1. c. i. 5. 
Faorina cavernosa, Gray, Ann. & Mag. JY. H. 1851. 
Hab. South America, Statten Land. 
4. Favorina Australis. 
Body ovate, cordate ; base rather convex ; sides rounded. 
Tripylus Australis, Philippi, Erich. Arch. 1845, 347, t. 11, f. 3. 
Brissiopsis Australis, Agassiz A Desor, 1. c. 15. 
Faorina Australis, Gray , Ann. & Mag. JY.H. 1851. 
Hab. South America, Statten Land. 
Perhaps these three are only one species. 
